JP2022102869A - Inkjet ink composition, inkjet ink set, and inkjet recording device - Google Patents

Abstract

To provide an inkjet ink composition having excellent storage stability and further to provide an inkjet ink set and an inkjet recording device which are provided with the inkjet ink composition.SOLUTION: There is provided an inkjet ink composition which comprises a disperse dye, a silicone-based surfactant and water, wherein the content percentage of the disperse dye is 1.0 mass% or more and 3.0 mass% or less and in the silicone-based surfactant, when a mixed liquid is prepared by mixing 99.0 pts.mass of a 10 mass% solution of propylene glycol and 1.0 pt.mass of the silicone-based surfactant, the mixed solution has a cloud point of 60°C or more.SELECTED DRAWING: None

Description

The present invention relates to an inkjet ink composition, an inkjet ink set, and an inkjet recording device.

The inkjet recording method is a method in which small droplets of ink are ejected from a fine nozzle and adhered to a recording medium for recording. This method has a feature that a high-resolution and high-quality image can be recorded at high speed with a relatively inexpensive device. In the inkjet recording method, there are numerous factors to be examined, such as the properties of the ink used, the stability in recording, and the quality of the obtained image, and research on the ink used as well as the inkjet recording device is active.

In particular, in an inkjet ink containing a disperse dye, when the dispersion stability of the disperse dye, which is a coloring material, is lowered, there is a problem that foreign matter due to aggregation of the disperse dye and foreign matter due to recrystallization of the disperse dye are generated. It was occurring.

Therefore, for the purpose of solving the above-mentioned problems, the ratio of the sodium ion concentration to the content of the sodium naphthalene sulfonate formalin condensate containing the disperse dye and the sodium formalin sulfonate condensate is within a predetermined range. An inkjet ink composition having the above values has been proposed (see Patent Document 1).

JP-A-2015-193692

However, in recent years, there has been a demand for further improvement in storage stability of inkjet ink compositions.

More specifically, an inkjet ink composition having a relatively high disperse dye content can achieve relatively high storage stability, whereas an inkjet ink having a relatively low disperse dye content can be achieved. In the composition, more specifically, the content of the disperse dye is 3.0% by mass or less, and the inkjet ink composition containing water cannot be said to have sufficient storage stability.

Further, for example, in an inkjet recording apparatus provided with a large-capacity ink container, the storage period of the inkjet ink composition in the inkjet recording apparatus tends to be long, and for example, the solid content in the inkjet ink composition gradually precipitates. As a result, the color of the image formed by using the inkjet ink composition may change little by little.

Further, in an inkjet recording apparatus having a plurality of ink containers for accommodating an ink composition of the same color and appropriately switching the ink container to be used according to the usage status of the ink composition, the solid content in the ink composition. If the color of the formed image is changed due to the sedimentation of the ink, the color of the image may be significantly changed when the ink container to be used is switched.

The present invention has been made to solve the above-mentioned problems, and can be realized as the following application examples.

The inkjet ink composition according to an application example of the present invention is an inkjet ink composition containing a disperse dye, a silicone-based surfactant, and water.
The content of the disperse dye is 1.0% by mass or more and 3.0% by mass or less.
The silicone-based surfactant is said to be a mixed solution when a 10% by mass aqueous solution of propylene glycol: 99.0 parts by mass and the silicone-based surfactant: 1.0 part by mass are mixed to prepare a mixed solution. The cloud point of the mixed solution is 60 ° C. or higher.

Further, the inkjet ink composition according to another application example of the present invention further contains a dispersant.

Further, in the inkjet ink composition according to another application example of the present invention, the dispersant is one or more selected from the group consisting of a sodium salt of a naphthalene sulfonic acid formalin condensate and a sodium salt of lignin sulfonic acid. Is.

Further, in the inkjet ink composition according to another application example of the present invention, the disperse dye is C.I. I. Disperse thread 60 and C.I. I. One or more selected from the group consisting of Disperse Blue 359.

Further, in the inkjet ink composition according to another application example of the present invention, the content of the disperse dye is 2.0% by mass or less.

Further, in the inkjet ink composition according to another application example of the present invention, the content of the silicone-based surfactant is 0.1% by mass or more and 3.0% by mass or less.

The inkjet ink set according to the application example of the present invention is an inkjet ink set including a plurality of types of inkjet ink compositions.
At least one of the inkjet ink compositions constituting the inkjet ink set is the inkjet ink composition according to the application example of the present invention.

The inkjet ink set according to another application example of the present invention includes two or more kinds of inkjet ink compositions according to the application example of the present invention.

The inkjet ink set according to another application example of the present invention comprises the inkjet ink composition according to the application example of the present invention as a light-colored ink, and the same disperse dye as the disperse dye contained in the light-colored ink. It is provided with a dark color ink contained in a content higher than that of the light color ink.

The inkjet ink set according to another application example of the present invention includes an ink containing cyan ink as the dark color ink.
The content of the disperse dye in the cyan ink is 3.5% by mass or more and 6.0% by mass or less.

In the inkjet ink set according to another application example of the present invention, the content of the disperse dye contained in the cyan ink is XDC [mass%], and the light color ink containing the same disperse dye as the cyan ink is contained. When the content of the disperse dye contained is XLC [mass%], the relationship of 0.18 ≦ XLC / XDC ≦ 0.70 is satisfied.

The inkjet ink set according to another application example of the present invention includes an ink containing magenta ink as the dark color ink.
The content of the disperse dye in the magenta ink is 5.0% by mass or more and 8.0% by mass or less.

In the inkjet ink set according to another application example of the present invention, the content of the disperse dye contained in the magenta ink is XDM [mass%], and the light color ink containing the same disperse dye as the magenta ink is contained. When the content of the disperse dye contained is XLM [mass%], the relationship of 0.18 ≦ XLM / XDM ≦ 0.70 is satisfied.

The inkjet recording apparatus according to the application example of the present invention includes the inkjet ink composition according to the application example of the present invention.

FIG. 1 is a perspective view showing an outline of an inkjet recording device according to an embodiment. FIG. 2 is a cross-sectional view of a main part showing an outline of a droplet ejection device included in the inkjet recording device according to the embodiment. FIG. 3 is a perspective view showing an outline of the inkjet ink composition supply device according to the embodiment. FIG. 4 is a perspective view showing an outline of the inkjet ink composition supply device according to the embodiment. FIG. 5 is a perspective view showing an outline of the inkjet ink composition supply device according to the embodiment. FIG. 6 is a perspective view showing an outline of the inkjet ink composition supply device according to the embodiment. FIG. 7 is a perspective view showing an outline of the inkjet ink composition supply device according to the embodiment.

Hereinafter, preferred embodiments of the present invention will be described in detail.
[1] Inkjet Ink Composition First, the inkjet ink composition of the present invention will be described.

The inkjet ink composition of the present invention is an inkjet ink composition containing a disperse dye, a silicone-based surfactant, and water, and the content of the disperse dye is 1.0% by mass or more. It is 0% by mass or less. When the silicone-based surfactant is mixed with a 10% by mass aqueous solution of propylene glycol: 99.0 parts by mass and the silicone-based surfactant: 1.0 part by mass to prepare a mixed liquid. The cloud point of the mixed solution is 60 ° C. or higher.

This makes it possible to provide an inkjet ink composition having excellent storage stability. In particular, as described above, the above effects can be obtained in an inkjet ink composition having a relatively low content of the disperse dye. Further, by improving the storage stability of the inkjet ink composition, it is possible to effectively prevent the composition and color of the inkjet ink composition ejected by the inkjet method from being unintentionally changed over time. It can be prevented, and the stability and reliability of the formed image and the produced recorded matter can be improved.

On the other hand, if the above conditions are not satisfied, satisfactory results cannot be obtained.
For example, when the inkjet ink composition does not contain a silicone-based surfactant, the storage stability of the inkjet ink composition cannot be improved.

Further, when the content of the dispersed dye in the inkjet ink composition is less than the above lower limit value, the color density is sufficiently prevented from occurring in the image formed by using the inkjet ink composition, such as bleeding. It becomes difficult to sufficiently increase.

Further, if the cloud point of the silicone-based surfactant obtained as described above is less than 60 ° C., the storage stability of the inkjet ink composition cannot be improved.

In the present invention, the cloud point is a value obtained by measurement based on JIS K 2269 using the mixed solution.

[1-1] Disperse Dye The inkjet ink composition of the present invention contains a disperse dye.

The disperse dye contained in the inkjet ink composition of the present invention is not particularly limited, and specific examples thereof include the following.

Examples of the yellow disperse dye include C.I. I. Disperse Yellow 3, 4, 5, 7, 9, 13, 23, 24, 30, 33, 34, 42, 44, 49, 50, 51, 54, 56, 58, 60, 63, 64, 66, 68 , 71, 74, 76, 79, 82, 83, 85, 86, 88, 90, 91, 93, 98, 99, 100, 104, 108, 114, 116, 118, 119, 122, 124, 126, 135 , 140, 141, 149, 160, 162, 163, 164, 165, 179, 180, 182, 183, 184, 186, 192, 198, 199, 202, 204, 210, 211, 215, 216, 218, 224. 227, 231, 232 and the like.

Examples of the orange disperse dye include C.I. I. Disperse Orange 1, 3, 5, 7, 11, 13, 17, 20, 21, 25, 29, 30, 31, 32, 33, 37, 38, 42, 43, 44, 45, 46, 47, 48 , 49, 50, 53, 54, 55, 56, 57, 58, 59, 61, 66, 71, 73, 76, 78, 80, 89, 90, 91, 93, 96, 97, 119, 127, 130. 139, 142 and the like can be mentioned.

Examples of the red disperse dye include C.I. I. Disperse threads 1, 4, 5, 7, 11, 12, 13, 15, 17, 27, 43, 44, 50, 52, 53, 54, 55, 56, 58, 59, 60, 65, 72, 73, 74, 75, 76, 78, 81, 82, 86, 88, 90, 91, 92, 93, 96, 103, 105, 106, 107, 108, 110, 111, 113, 117, 118, 121, 122, 126, 127, 128, 131, 132, 134, 135, 137, 143, 145, 146, 151, 152, 153, 154, 157, 159, 164, 167, 169, 177, 179, 181, 183, 184, 185, 188, 189, 190, 191, 192, 200, 201, 202, 203, 205, 206, 207, 210, 221, 224, 225, 227, 229, 239, 240, 257, 258, 277, 278, 279, 281, 288, 298, 302, 303, 310, 311, 312, 320, 324, 328 and the like.

Examples of the violet disperse dye include C.I. I. Disperse Violet 1, 4, 8, 23, 26, 27, 28, 31, 33, 35, 36, 38, 40, 43, 46, 48, 50, 51, 52, 56, 57, 59, 61, 63 , 69, 77 and the like.

Examples of the green disperse dye include C.I. I. Disperse green 9 and the like can be mentioned.

Examples of the brown disperse dye include C.I. I. Disperse brown 1, 2, 4, 9, 13, 19 and the like can be mentioned.

Examples of the blue disperse dye include C.I. I. Disperse Blue 3, 7, 9, 14, 16, 19, 20, 26, 27, 35, 43, 44, 54, 55, 56, 58, 60, 62, 64, 71, 72, 73, 75, 79 , 81, 82, 83, 87, 91, 93, 94, 95, 96, 102, 106, 108, 112, 113, 115, 118, 120, 122, 125, 128, 130, 139, 141, 142, 143. 146, 148, 149, 153, 154, 158, 165, 167, 171, 173, 174, 176, 181, 183, 185, 186, 187, 189, 197, 198, 200, 201, 205, 207, 211. , 214, 224, 225, 257, 259, 267, 268, 270, 284, 285, 287, 288, 291, 293, 295, 297, 301, 315, 330, 333, 359 and the like.

Examples of the black disperse dye include C.I. I. Disperse Black 1, 3, 10, 24 and the like can be mentioned.

In the inkjet ink composition of the present invention, for example, one kind or a combination of two or more kinds selected from the above-mentioned disperse dyes can be used.

In particular, the disperse dye is C.I. I. Disperse thread 60 and C.I. I. When it is one or more selected from the group consisting of Disperse Blue 359, the effect of the present invention as described above is more remarkablely exhibited.

The content of the disperse dye in the inkjet ink composition of the present invention may be 1.0% by mass or more and 3.0% by mass or less, but the lower limit of the content of the disperse dye in the inkjet ink composition of the present invention. The value is preferably 1.1% by mass, more preferably 1.2% by mass. Further, the upper limit of the content of the disperse dye in the inkjet ink composition of the present invention is preferably 2.0% by mass, more preferably 1.8% by mass.
As a result, the effects of the present invention as described above are more prominently exhibited.

[1-2] Silicone-based surfactant The inkjet ink composition of the present invention contains a silicone-based surfactant.

The silicone-based surfactant constituting the inkjet ink composition of the present invention satisfies the conditions for the cloud point as described above.

As a specific example of the silicone-based surfactant, for example, a compound represented by the following formula can be preferably used.

（式中、Ｒは水素原子またはメチル基を表し、ａは２以上１３以下の整数を表し、ｍは２以上７０以下の整数を表し、ｎは１以上８以下の整数を表す。）

(In the formula, R represents a hydrogen atom or a methyl group, a represents an integer of 2 or more and 13 or less, m represents an integer of 2 or more and 70 or less, and n represents an integer of 1 or more and 8 or less.)

The content of the silicone-based surfactant in the inkjet ink composition of the present invention is preferably 0.1% by mass or more and 3.0% by mass or less, preferably 0.2% by mass or more and 2.0% by mass or less. It is more preferable to have it, and it is further preferable to have it in an amount of 0.3% by mass or more and 1.5% by mass or less.

Thereby, the storage stability of the inkjet ink composition of the present invention can be further improved.

[1-3] Water The inkjet ink composition of the present invention contains water.
Water is a component that mainly functions as a dispersion medium for disperse dyes in an inkjet ink composition.

The content of water in the inkjet ink composition of the present invention is preferably 40% by mass or more and 80% by mass or less, more preferably 45% by mass or more and 75% by mass or less, and 50% by mass or more and 70% by mass or less. It is more preferably% or less.

Thereby, the viscosity of the inkjet ink composition can be more reliably adjusted to a suitable value, and the ejection stability by the inkjet method can be further improved.

[1-4] Dispersant The inkjet ink composition of the present invention may contain a disperse dye, a silicone-based surfactant satisfying the above-mentioned conditions, and water, but further contains a dispersant. You may be.

Thereby, the storage stability of the inkjet ink composition of the present invention can be further improved.

Examples of the dispersant include a sodium salt of a naphthalene sulfonic acid formalin condensate, a sodium salt of lignin sulfonic acid, a sodium salt of styrene-styrene sulfonic acid, a sodium salt of a cleosort oil sulfonic acid formalin condensate, and the like. One or more selected from the above can be used, but one or more selected from the group consisting of a sodium salt of a naphthalene sulfonic acid formarin condensate and a sodium salt of lignin sulfonic acid. Is preferable.
As a result, the above-mentioned effect is more prominently exhibited.

The content of the dispersant in the inkjet ink composition of the present invention is preferably 0.5% by mass or more and 4.0% by mass or less, and preferably 0.8% by mass or more and 3.2% by mass or less. It is more preferably 1.1% by mass or more and 1.8% by mass or less.
As a result, the above-mentioned effect is more prominently exhibited.

[1-5] Water-soluble organic solvent The inkjet ink composition of the present invention may contain a water-soluble organic solvent.

This makes it possible to improve the moisturizing property of the inkjet ink composition, and more effectively prevent the solid content of the inkjet ink composition from being unintentionally deposited due to drying with an inkjet head or the like. be able to. In addition, the viscosity of the inkjet ink composition can be adjusted more preferably. Therefore, the ejection stability of the inkjet ink composition obtained by the inkjet method can be further improved.

The water-soluble organic solvent may be any organic solvent that is soluble in water, and for example, an organic solvent having a solubility in water at 25 ° C. of 10 g / 100 g or more can be preferably used.

The boiling point of the water-soluble organic solvent under 1 atm is preferably 180 ° C. or higher and 300 ° C. or lower.

As a result, the moisturizing property of the inkjet ink composition can be further improved, and the solid content of the inkjet ink composition is more effectively prevented from being unintentionally deposited due to drying with an inkjet head or the like. can do. Therefore, the ejection stability of the inkjet ink composition obtained by the inkjet method can be further improved. In addition, after ejecting the inkjet ink composition, it can be volatilized relatively easily when necessary, and it is more effective that the water-soluble organic solvent unintentionally remains in the produced recorded material. Can be prevented.

Examples of such a water-soluble organic solvent include alkyl monoalcohols; alkyl diols; glycerin; glycols; glycol monoethers; lactams and the like, and one or more selected from these may be used. Can be used in combination.

Examples of glycols include ethylene glycol, diethylene glycol, triethylene glycol, propylene glycol and the like. Examples of glycol monoethers include triethylene glycol monomethyl ether and triethylene glycol monobutyl ether. Examples of lactams include 2-pyrrolidone and the like.

The content of the water-soluble organic solvent in the inkjet ink composition of the present invention is preferably 4.0% by mass or more and 45% by mass or less, and more preferably 9.0% by mass or more and 40% by mass or less. , 11% by mass or more and 38% by mass or less is more preferable.

This makes it possible to more preferably improve the moisturizing property of the inkjet ink composition while making the viscosity of the inkjet ink composition more suitable. As a result, the ejection stability of the inkjet ink composition obtained by the inkjet method can be further improved.

Further, when the content of water in the inkjet ink composition is XW [mass%] and the content of the water-soluble organic solvent in the inkjet ink composition is XH [mass%], XH / XW is 0.10. It is preferably 0.65 or more, more preferably 0.20 or more and 0.60 or less, and further preferably 0.30 or more and 0.55 or less.

This makes it possible to more preferably improve the moisturizing property of the inkjet ink composition while making the viscosity of the inkjet ink composition more suitable. As a result, the ejection stability of the inkjet ink composition obtained by the inkjet method can be further improved.

[1-6] Other Components The inkjet ink composition of the present invention may contain components other than those described above. Hereinafter, such components are also referred to as "other components".

Other components include, for example, pH adjusters such as triethanolamine; chelating agents; preservatives / fungicides; rust preventives; flameproofing agents; various dispersants; coloring materials other than disperse dyes; silicone-based surfactants. Surfactants other than activators; antioxidants; UV absorbers; oxygen absorbers; solubilizing agents; penetrants and the like can be mentioned.

Examples of the chelating agent include ethylenediaminetetraacetic acid salt and the like. Examples of preservatives and antifungal agents include sodium benzoate, sodium pentachlorophenol, 2-pyridinethiol-1-oxide sodium, sodium sorbate, sodium dehydroacetate, and 1,2-dibenzoisothiazolin-3-one. , 4-Chloro-3-methylphenol and the like. Further, examples of the rust preventive agent include benzotriazole and the like.

As the preservative / fungicide, for example, a compound having an isothiazolin ring structure in the molecule can be preferably used.

As the surfactant, for example, various surfactants such as anionic surfactants, cationic surfactants, and nonionic surfactants can be used.

The content of the other components is preferably 6.0% by mass or less, more preferably 5.0% by mass or less.
The lower limit of the content of other components is 0% by mass.

[1-7] Others The surface tension of the inkjet ink composition of the present invention at 25 ° C. is not particularly limited, but is preferably 20 mN / m or more and 50 mN / m or less, and is 21 mN / m or more and 40 mN / m or less. Is more preferable, and more preferably 23 mN / m or more and 30 mN / m or less.

As a result, clogging of the nozzle of the inkjet head is less likely to occur, and the ejection stability of the inkjet ink composition is further improved. Further, even if the nozzle is clogged, the recoverability by capping the nozzle can be further improved.

As the surface tension, a value measured by the Wilhelmy method can be adopted. A surface tension meter (for example, manufactured by Kyowa Interface Science Co., Ltd., CBVP-7, etc.) can be used for measuring the surface tension.

The viscosity of the inkjet ink composition of the present invention at 25 ° C. is preferably 2 mPa · s or more and 10 mPa · s or less, more preferably 3 mPa · s or more and 8 mPa · s or less, and 4 mPa · s or more and 6 mPa · s. The following is more preferable.

As a result, the ejection stability of the inkjet ink composition by the inkjet method becomes more excellent.

The viscosity can be determined by measurement based on JIS Z8809 using a vibration viscometer.

Further, although the inkjet ink composition of the present invention is subjected to ejection by an inkjet method, it is not limited to ejecting the inkjet ink composition directly to the final recording medium, and once on an intermediate transfer medium. It may be ejected and then transferred to the final recording medium.

In particular, the inkjet ink composition of the present invention is preferably one that is once ejected onto an intermediate transfer medium and then transferred to a fabric as a recording medium by sublimation, that is, one that is subjected to sublimation transfer printing. ..

This eliminates the need for pretreatment on the fabric because printing is performed on the intermediate medium coated with the ink receiving layer. Moreover, since only the coloring material is sublimated and dyed, the color is vivid and the fastness is high, and the texture does not change. Further, since the printer transports the transfer paper, the mechanism is simple and the cost can be suppressed unlike the printer that transports the cloth. In addition, since complicated processes such as pretreatment and cleaning are not required and a large steamer is not required for dyeing, the capital investment cost for entry, the space for equipment can be reduced, and the environmental load is small.

[2] Inkjet Ink Set Next, the inkjet ink set of the present invention will be described.
The inkjet ink set of the present invention comprises a plurality of types of inkjet ink compositions. At least one of the inkjet ink compositions constituting the inkjet ink set is the above-mentioned inkjet ink composition of the present invention.

Thereby, it is possible to provide an inkjet ink composition which is provided with an inkjet ink composition having excellent storage stability, can perform stable image formation, and can be suitably used for producing a highly reliable recorded material. can.

The inkjet ink set of the present invention comprises a plurality of types of inkjet ink compositions, and at least one of them may be the above-mentioned inkjet ink composition of the present invention, but the above-mentioned inkjet ink composition of the present invention may be used. It is preferable to have two or more types.
The above-mentioned effects are more prominent.

Further, the inkjet ink set of the present invention includes the above-mentioned inkjet ink composition of the present invention as a light-colored ink, and has a higher content of the same disperse dye as the disperse dye contained in the light-colored ink than the light-colored ink. It is preferable that the ink is provided with the dark ink contained in.

For example, the inkjet ink set of the present invention may include an inkjet ink composition containing a cyan dispersion dye as a light color ink and a dark color ink.

Further, for example, the inkjet ink set of the present invention may include an inkjet ink composition containing magenta disperse dye as a light color ink and a dark color ink.

As a result, for example, in an image formed by using an inkjet ink set, the connection between colors between a portion formed by using a light color ink and a portion formed by using a dark color ink is improved. It is possible to improve the aesthetics of the image.

When the inkjet ink set of the present invention includes an ink containing a cyan disperse dye as a dark color ink, the content of the disperse dye in the cyan ink as a dark color ink is 3.5% by mass or more. It is preferably 0% by mass or less, and more preferably 4.0% by mass or more and 5.0% by mass or less.

This makes it possible to more preferably form an image having a sufficiently high color density. Further, when the inkjet ink set of the present invention includes a cyan ink as a dark color ink and a light cyan ink as a light color ink which is the inkjet ink composition of the present invention, a portion and a dark color formed by using the light color ink are provided. The connection between colors with the portion formed by using the ink can be made more excellent, and the aesthetics of the image can be made more excellent.

The content of the disperse dye contained in the cyan ink, which is a dark color ink, is XDC [mass%], and the content of the disperse dye contained in the light cyan ink, which is a light color ink containing the same disperse dye as the cyan ink. When the ratio is XLC [mass%], it is preferable to satisfy the relationship of 0.18 ≤ XLC / XDC ≤ 0.70, and more preferably the relationship of 0.20 ≤ XLC / XDC ≤ 0.60. It is more preferable to satisfy the relationship of 0.30 ≦ XLC / XDC ≦ 0.40.

As a result, an image having a sufficiently high color density can be more preferably formed, and the connection between colors between the portion formed by using the light color ink and the portion formed by using the dark color ink can be further improved. It can be made excellent, and the aesthetics of the image can be made more excellent.

When the inkjet ink set of the present invention includes an ink containing a magenta disperse dye as a dark color ink, the content of the disperse dye in the magenta ink as a dark color ink is 5.0% by mass or more. It is preferably 0% by mass or less, and more preferably 6.0% by mass or more and 7.0% by mass or less.

This makes it possible to more preferably form an image having a sufficiently high color density. Further, when the inkjet ink set of the present invention includes magenta ink as a dark color ink and light magenta ink as a light color ink which is the inkjet ink composition of the present invention, a portion and a dark portion formed by using the light color ink are provided. The connection between colors with the portion formed by using the color ink can be made more excellent, and the aesthetics of the image can be made more excellent.

The content of the disperse dye contained in the magenta ink which is a dark color ink is XDM [mass%], and the disperse dye contained in the light magenta ink which is a light color ink containing the same disperse dye as the magenta ink. When the content is XLM [mass%], it is preferable to satisfy the relationship of 0.18 ≤ XLM / XDM ≤ 0.70, and more preferably the relationship of 0.20 ≤ XLM / XDM ≤ 0.60. , 0.25 ≦ XLM / XDM ≦ 0.30 is more preferable.

As a result, an image having a sufficiently high color density can be more preferably formed, and the connection between colors between the portion formed by using the light color ink and the portion formed by using the dark color ink can be further improved. It can be made excellent, and the aesthetics of the image can be made more excellent.

The dark color ink as described above may contain, for example, each component described as a constituent component of the inkjet ink composition of the present invention.

[3] Recording Method Next, a recording method using the inkjet ink composition of the present invention will be described.

The inkjet ink composition and inkjet ink set of the present invention can be applied to, for example, a direct printing method, a thermal transfer printing method, for example, sublimation printing and the like.

Hereinafter, an example of a thermal transfer printing method will be described as a recording method using the inkjet ink composition of the present invention.

The recording method according to the present embodiment is an ink adhesion step of adhering an inkjet ink composition to an intermediate transfer medium by an inkjet method, and heating the intermediate transfer medium to which the inkjet ink composition is adhered into the inkjet ink composition. It has a transfer step of transferring the contained disperse dye to a recording medium.

[3-1] Ink Adhesion Step In the ink adhesion step, the inkjet ink composition is adhered to the intermediate transfer medium by an inkjet method. The ejection of the inkjet ink composition by the inkjet method can be performed using a known inkjet recording device. As the ejection method, a piezo method, a method of ejecting ink by using bubbles generated by heating the ink, or the like can be used. Above all, the piezo method is preferable from the viewpoint of difficulty in deteriorating the ink jet ink composition.

In the ink adhesion step, inks other than the inkjet ink composition of the present invention may be used in combination. For example, an inkjet ink set including an inkjet ink composition other than the inkjet ink composition of the present invention may be used.

[3-2] Intermediate transfer medium As the intermediate transfer medium, for example, a paper such as plain paper, a recording medium provided with an ink receiving layer called a special paper for inkjet, a coated paper, or the like can be used. Of these, paper provided with an ink receiving layer made of inorganic fine particles such as silica is preferable. As a result, an intermediate transfer medium in which bleeding and the like are suppressed can be obtained in the process of drying the inkjet ink composition adhering to the intermediate transfer medium, and the sublimation of the disperse dye becomes smoother in the subsequent transfer step. It tends to progress.

[3-3] Transfer Step After that, the intermediate transfer medium to which the inkjet ink composition is attached is heated, and the disperse dye as a constituent component of the inkjet ink composition is transferred to the recording medium. As a result, a recorded material is obtained.

The heating temperature in this step is preferably 160 ° C. or higher and 230 ° C. or lower, and more preferably 170 ° C. or higher and 230 ° C. or lower, although it depends on the type of the disperse dye.

As a result, the energy required for transcription can be reduced, and the productivity of the recorded material can be further improved. In addition, the color development property of the obtained recorded material can be further improved.

The heating time in this step is preferably 30 seconds or more and 90 seconds or less, and more preferably 45 seconds or more and 80 seconds or less, although it depends on the heating temperature.

As a result, the energy required for transcription can be reduced, and the productivity of the recorded material can be further improved. In addition, the color development property of the obtained recorded material can be further improved.

Further, this step may be performed by heating the surface of the intermediate transfer medium to which the inkjet ink composition is attached in a state where the surface of the intermediate transfer medium is opposed to the recording medium at regular intervals, or the surface of the intermediate transfer medium is in close contact with the surface of the recording medium. Although it may be carried out by heating in a state of being in close contact with the surface of the recording medium, it is preferably carried out by heating in a state where the surface of the intermediate transfer medium to which the inkjet ink composition is attached is in close contact with the surface of the recording medium.

As a result, the energy required for transcription can be reduced, and the productivity of the recorded material can be further improved. In addition, the color development of the obtained recorded material can be further improved.

[3-4] Recording medium The recording medium is not particularly limited, and examples thereof include cloth such as hydrophobic fiber cloth, resin film, paper, glass, metal, and ceramics. Further, as the recording medium, a medium having a three-dimensional shape such as a sheet shape, a spherical shape, or a rectangular parallelepiped shape may be used.

When the recording medium is a cloth, the fibers constituting the cloth include, for example, polyester fiber, nylon fiber, triacetate fiber, diacetate fiber, polyamide fiber, cellulose fiber, and a blended product using two or more of these fibers. Can be mentioned. Further, a blended product of these with recycled fibers such as rayon or natural fibers such as cotton, silk and wool may be used.

The fabrics include, for example, plain weave, weave, satin weave, change plain weave, change weave, change satin weave, change weave, pattern weave, single layer weave, double weave, multiple structure, warp pile weave, weave. Various woven fabrics such as pile weave and leno weave can be used.

Further, the thickness of the fibers constituting the fabric can be, for example, 10d or more and 100d or less.

When the recording medium is a resin film, examples of the resin film include a polyester film, a polyurethane film, a polycarbonate film, a polyphenylene sulfide film, a polyimide film, and a polyamide imide film.

The resin film may be a laminated body in which a plurality of layers are laminated, or may be composed of a functionally graded material whose material composition changes in an inclined manner.

[4] Inkjet recording device Next, the inkjet recording device of the present invention will be described.

The inkjet recording apparatus of the present invention comprises an inkjet ink composition.
This makes it possible to provide an inkjet recording apparatus capable of stably forming an image and suitably used for producing a highly reliable recorded material.

Hereinafter, preferred embodiments of the inkjet recording apparatus of the present invention will be described with reference to the drawings. Such an embodiment shows one aspect of the present invention, and can be arbitrarily changed within the scope of the technical idea of the present invention. Further, in each of the following figures, the scale of each layer and each part is different from the actual scale in order to make each layer and each part recognizable on the drawing.

In particular, the inkjet recording apparatus includes an ink jet recording apparatus having a large capacity for accommodating an inkjet ink composition and a plurality of ink accommodators accommodating the same type of inkjet ink composition as described below, and the inkjet ink composition. If the ink-jet container to be used can be appropriately switched according to the usage situation and the like, the effect of the present invention as described above is more remarkably exhibited.

FIG. 1 is a perspective view showing an outline of an inkjet recording device according to an embodiment. FIG. 2 is a cross-sectional view of a main part showing an outline of a droplet ejection device included in the inkjet recording device according to the present embodiment.

First, with reference to FIGS. 1 and 2, an outline of the inkjet recording device 1 according to the present embodiment and the droplet ejection device 10 included in the inkjet recording device 1 will be described. Further, the inkjet ink composition supply device 100 included in the inkjet recording device 1 according to the present embodiment will be described in detail later.

As shown in FIG. 1, the inkjet recording device 1 according to the present embodiment is supplied from an inkjet ink composition supply device 100 that supplies an inkjet ink composition to a droplet ejection device 10 and an inkjet ink composition supply device 100. The ink jet ink composition is provided with a droplet ejection device 10 including an ejection unit for ejecting the ink jet ink composition to the media M. Further, the droplet ejection device 10 according to the present embodiment is a large format printer that conveys the media M by a roll-to-roll method and prints an image on the media M having a large size such as A0 size or B1 size.

In the following description, the width direction of the droplet ejection device 10, in other words, the longitudinal direction is the X direction, the depth direction of the droplet ejection device 10, in other words, the lateral direction is the Y direction, and the droplet ejection device 10 is used. The height direction is the Z direction. Further, the tip end side of the arrow indicating the direction is the + direction, and the base end side of the arrow indicating the direction is the-direction.

As shown in FIG. 2, the droplet ejection device 10 includes a housing 13 supported by a pedestal 12.

The droplet ejection device 10 includes a control device 11 arranged inside the housing 13. The control device 11 has a CPU, a memory, and the like, and controls each part of the droplet ejection device 10. In addition, the control device 11 controls the supply of the inkjet ink composition from the inkjet ink composition supply device 100.

Further, the droplet ejection device 10 includes a feeding portion 20 for feeding the media M from the outside of the housing 13 toward the inside of the housing 13, and a support portion 30 for supporting the media M fed by the feeding portion 20. .. Further, the droplet ejection device 10 is printed by a transport unit 50 that conveys the media M along the support unit 30, a printing unit 40 that prints on the media M supported by the support unit 30, and a printing unit 40. It is provided with a winding unit 25 for winding the media M discharged to the outside of the housing 13.

In the droplet ejection device 10 according to the present embodiment, the feeding section 20 and the winding section 25 are provided outside the housing 13, and the support section 30, the transport section 50, and the printing section 40 are inside the housing 13. It is provided.

The feeding portion 20 is provided on the back surface side of the droplet ejection device 10, that is, on the + Y direction side in FIG. 2, and has a holding portion 21 for holding the roll body R on which the media M is wound in a cylindrical shape. .. The holding portion 21 is attached to the pedestal 12 and rotatably holds the roll body R. Then, the feeding unit 20 feeds the media M from the roll body R toward the inside of the housing 13 by rotating the roll body R in one direction, that is, in the counterclockwise direction in FIG.

The support portion 30 supports the media M from the lower side, that is, from the −Z direction side in FIG. 2, and includes a first support portion 31, a second support portion 32, and a third support portion 33. The first support portion 31, the second support portion 32, and the third support portion 33 are provided side by side from the back surface side of the droplet ejection device 10 to the opposite front surface side, that is, the −Y direction side in FIG. Of these, the first support portion 31 and the third support portion 33 are provided so that a part of each is exposed to the outside of the housing 13. Then, the first support portion 31 guides the media M delivered from the feeding portion 20 to the second support portion 32, and the second support portion 32 guides the media M guided from the first support portion 31 to the third support portion 32. Guided to 33, the third support unit 33 guides the media M guided from the second support unit 32 to the winding unit 25.

That is, the first support portion 31, the second support portion 32, and the third support portion 33 form the transport path for transporting the media M so as to extend from the back surface side to the front surface side of the droplet ejection device 10. Has been done. Further, the first support portion 31 and the second support portion 32 are attached to a base member 35 provided in the housing 13.

The printing unit 40 includes a guide shaft 41 extending in the X direction, a carriage 42 supported by the guide shaft 41, and a plurality of ejection heads 43 for ejecting the inkjet ink composition onto the media M. The carriage 42 is provided so as to be able to reciprocate in the X direction along the guide shaft 41. The plurality of discharge heads 43 are arranged in the X direction. Each of the plurality of ejection heads 43 has six ink composition, that is, light cyan ink which is a light color ink, light magenta ink which is a light color ink, cyan ink which is a dark color ink, and magenta ink which is a dark color ink. Either one of yellow ink and black ink can be ejected. The discharge head 43 is held by the carriage 42 so as to face the media M supported by the second support portion 32. The printing unit 40 can print a full-color image on the media M by moving the carriage 42 along the guide shaft 41 and ejecting inkjet ink compositions of different colors from each of the plurality of ejection heads 43. be. Each of the plurality of ejection heads 43 includes a nozzle plate (not shown) formed with a plurality of nozzles (not shown) for ejecting the inkjet ink composition.
The discharge head 43 is an example of a discharge unit.

The winding unit 25 is provided on the front surface side of the droplet ejection device 10 and has a holding unit 26 for holding the roll body R formed by winding the media M in a cylindrical shape. The holding portion 26 is attached to the pedestal 12 and rotatably holds the roll body R. Then, the winding unit 25 winds the media M printed by the printing unit 40 by rotating the roll body R in one direction, that is, in the counterclockwise direction in FIG. 2.

The transport unit 50 includes a transport roller pair 51 provided between the first support portion 31 and the second support portion 32 in a transport path composed of the support portion 30, and a second support portion 32 and a third support portion 33. It is provided with a transfer roller pair 52 provided between the two.

In this embodiment, the droplet ejection device 10 having two transport roller pairs 51 and 52 is exemplified, but the droplet ejection device 10 may have a configuration having a single transfer roller pair, and the droplet ejection device 10 may be provided. The device 10 may be configured to have three or more transport roller pairs.

The transport roller pairs 51 and 52 have a drive roller 56 that comes into contact with the media M from the lower side, and a driven roller 57 that comes into contact with the media M from the upper side, that is, from the + Z direction side in FIG.

In the transport roller pairs 51 and 52, the drive roller 56 rotates by driving a motor (not shown) which is a power source of the drive roller 56. The driven roller 57 rotates as the drive roller 56 rotates. The transport roller pairs 51 and 52 transport the media M along the transport path with the drive roller 56 and the driven roller 57 sandwiching the media M.

3 to 7 are perspective views showing an outline of the inkjet ink composition supply device according to the present embodiment, respectively.
In FIGS. 3 and 4, the housing 110 is not mounted on the inkjet ink composition supply device 100, and in FIGS. 5 to 7, the housing 110 is mounted on the inkjet ink composition supply device 100. Further, in FIGS. 3 and 7, the cover 150 is arranged so as to protect the connector 140, and in FIGS. 4 to 6, the cover 150 is arranged so as to expose the connector 140.

In the following description, the arrangement of the cover 150 so as to protect the connector 140 is referred to as the cover 150 being in the closed state, and the arrangement of the cover 150 so as to expose the connector 140 means that the cover 150 is arranged. It is said to be in an open state.

Next, with reference to FIGS. 1 and 3 to 7, an outline of the inkjet ink composition supply device 100 according to the present embodiment will be described.

As shown in FIG. 1, in the inkjet recording device 1, the droplet ejection device 10 is connected to the inkjet ink composition supply device 100 via a plurality of tubes 105. The plurality of tubes 105 are piped in the thick protective tube 106 and protected by the thick protective tube 106. In the illustrated configuration, 12 tubes 105 are provided, but the number of tubes 105 is not limited to this.

The tube 105 and the protective tube 106 are flexible and bendable. Therefore, the droplet ejection device 10 and the inkjet ink composition supply device 100 are movable within a range in which the tube 105 and the protective tube 106 can be bent.

In the present embodiment, the longitudinal direction of the inkjet ink composition supply device 100 is arranged along the X direction, the lateral direction of the inkjet ink composition supply device 100 is arranged along the Y direction, and the inkjet ink composition supply device is arranged. It is assumed that the height direction of 100 is arranged along the Z direction.

In the inkjet ink composition supply device 100 according to the present embodiment, the first accommodating body 111 and the second accommodating body 112 are mounted. Each of the plurality of first containers 111 and each of the plurality of second containers 112 contains an inkjet ink composition corresponding to any one of the six types. That is, the inkjet ink composition supply device 100 according to the present embodiment can mount at least one first accommodating body 111 and at least one second accommodating body 112.

The at least one first housing 111 contains a housing 111LM containing light magenta ink, a housing 111LC containing light cyan ink, a housing 111Y containing yellow ink, and magenta ink. Containing body 111M, accommodating body 111C containing cyan ink, and accommodating body 111K containing black ink.

In a state where the first container 111 is placed on the inkjet ink composition supply device 100, the container 111LM containing the light magenta ink, the container 111LC containing the light cyan ink, and the yellow ink are stored. The accommodating body 111Y, the accommodating body 111M containing magenta ink, the accommodating body 111C containing cyan ink, and the accommodating body 111K containing black ink are sequentially arranged in the X direction.

The at least one second housing 112 contains a housing 112LM containing light magenta ink, a housing 112LC containing light cyan ink, a housing 112Y containing yellow ink, and magenta ink. The container 112M, the container 112C containing cyan ink, and the container 112K containing black ink are included.

In a state where the second container 112 is placed on the inkjet ink composition supply device 100, the container 112LM containing the light magenta ink, the container 112LC containing the light cyan ink, and the yellow ink are stored. The container 112Y, the container 112M containing magenta ink, the container 112C containing cyan ink, and the container 112K containing black ink are arranged in order in the X direction.

The capacity of each accommodating body, that is, the accommodating bodies 111LM, 111LC, 111Y, 111M, 111C, 111K, and the accommodating bodies 112LM, 112LC, 112Y, 112M, 112C, 112K is not particularly limited, but all of them are 1L or more. It is more preferable that it is 1 L or more and 20 L or less, and further preferably 3 L or more and 20 L or less.

As described above, by providing the large-capacity container, the above-mentioned effect of the present invention is more remarkably exhibited.

In the inkjet recording apparatus 1, the inkjet ink composition contained in each of the six containers 111LM, 111LC, 111Y, 111M, 111C, 111K, or the six containers 112LM, 112LC, 112Y, 112M, 112C, 112K. The inkjet ink composition contained therein is supplied to the ejection head 43 of the droplet ejection device 10 via the tube 105.

In the following description, the accommodating bodies 111LM, 111LC, 111Y, 111M, 111C, 111K, and the accommodating bodies 112LM, 112LC, 112Y, 112M, 112C, 112K may be referred to as the accommodating body 110.

In the inkjet ink composition supply device 100, the portion on which the first accommodating body 111 is placed and the portion on which the second accommodating body 112 is placed are in a plane-symmetrical relationship with respect to the XZ plane and have the same structure. Has. Therefore, in the following description, the portion where the first container 111 of the inkjet ink composition supply device 100 is placed will be described, and the second container 112 of the inkjet ink composition supply device 100 will be placed. The explanation of the part is omitted.

As shown in FIGS. 3 to 7, the inkjet ink composition supply device 100 includes a support portion 120, a mounting table 130 on which an accommodating body 110 filled with the inkjet ink composition can be placed, and a liquid from the accommodating body 110. It has a tube 105 capable of supplying the inkjet ink composition to the drop ejection device 10, a connector 140 connected to the tube 105 and detachable from the housing 110, and a cover 150 for protecting the connector 140. Further, as shown in FIG. 4, the inkjet ink composition supply device 100 has a detection unit 151 for detecting the position of the cover 150.

As shown in FIG. 5, the housing 110 is connected to an outer case 115 made of cardboard, an inkjet ink composition storage container (not shown) arranged inside the outer case 115, and an inkjet ink composition storage container. It has a connection port 117 that protrudes to the outside of the outer case 115. The inkjet ink composition container is made of, for example, a polyethylene resin so as not to be eroded by the inkjet ink composition.

Further, the accommodating body 110 is provided with a semiconductor substrate (not shown) for storing information on the inkjet ink composition contained in the inkjet ink composition accommodating container.

Returning to FIGS. 3-7, the mounting table 130 is supported by a support portion 120 arranged downward in the height direction, that is, in the −Z direction. In the inkjet ink composition supply device 100, when the accommodating body 110 is placed on the mounting table 130, the position of the mounting table 130 and the connector 140 so that the connection port 117 of the accommodating body 110 and the connector 140 can be connected to each other. The position of is adjusted.

Around the mounting table 130, a wall portion 131 extending above in the height direction, that is, in the + Z direction is provided. The wall portion 131 abuts on the accommodating body 110 mounted on the mounting table 130 to restrict the movement of the accommodating body 110. That is, the wall portion 131 provided on the mounting table 130 is an example of the second regulating portion.

By providing the wall portion 131, the accommodating body 110 becomes difficult to move on the mounting table 130, and is stably mounted on the mounting table 130.

A label 132 that can identify the type of the inkjet ink composition stored in the housing 110 mounted on the mounting table 130 is attached to the wall portion 131. Similarly, the cover 150 is also affixed with a label 152 that can identify the type of the inkjet ink composition stored in the housing 110 mounted on the mounting table 130.

Specifically, the labels 132 and 152 of the light magenta are affixed to the part where the container 110 containing the light magenta ink is placed, and the part where the container 110 containing the light cyan ink is placed is placed. The light cyan labels 132 and 152 are affixed, and the yellow label 132 and 152 are affixed to the part where the container 110 containing the yellow ink is placed, and the container 110 containing the magenta ink is placed. Magenta labels 132 and 152 are affixed to the part where the cyan ink is placed, and cyan labels 132 and 152 are affixed to the part where the container 110 containing the cyan ink is placed, and the black ink is contained. Black labels 132 and 152 are affixed to the part where the container 110 is placed. The user can identify the type of the housing 110 mounted on the mounting table 130 by the color of the labels 132 and 152.

Around the cover 150 in the support portion 120, a wall portion 121 extending above in the height direction, that is, in the + Z direction is provided. The cover 150 is arranged inside the wall portion 121 and is rotatably supported in the Z direction by the wall portion 121. In a state where the connector 140 is connected to the connection port 117 of the housing 110, the cover 150 exposes the position covering the grip portion 141 of the connector 140 shown in FIG. 7 or the grip portion 141 of the connector 140 shown in FIG. Placed in position.

The position where the cover 150 shown in FIG. 7 covers the grip portion 141 of the connector 140, that is, the position of the cover 150 when the cover 150 is in the closed state corresponds to the first position covering the grip portion, and thereafter, the first position. It is called 1 position. The position where the cover 150 shown in FIG. 6 exposes the grip portion 141 of the connector 140, that is, the position of the cover 150 when the cover 150 is in the open state corresponds to the second position which does not cover the grip portion, and thereafter, the second position. Called 2 positions.

In this way, the cover 150 covers the first position that covers the grip portion 141 of the connector 140 and the grip portion 141 of the connector 140 in a state where the connector 140 is attached to the accommodating body 110 mounted on the mounting table 130. It is possible to move to a second position that is not. Further, the cover 150 can move between the first position and the second position by rotating the cover 150 with the axis along the X direction as the rotation axis with respect to the mounting table 130.

The connector 140 is a liquid coupler connected to the connection port 117 of the housing 110. One of the connectors 140 is connected to the connection port 117 of the housing 110, and the other of the connectors 140 is connected to the tube 105. As a result, the connector 140 is connected to the connection port 117 of the housing 110, so that the inkjet ink composition of the housing 110 is supplied to the droplet ejection device 10 via the connector 140 and the tube 105.

The connector 140 has a grip portion 141 which is an outer case. The user grips the grip portion 141 and rotates the connector 140 in the Z direction. The connector 140 is provided with a lever 142 that locks the connection state between the connector 140 and the connection port 117 of the housing body 110 or releases the connection state between the connector 140 and the connection port 117 of the housing body 110.

Further, the connector 140 has a connecting member (not shown) that can be electrically connected to the semiconductor substrate provided in the housing 110. When the connector 140 is connected to the connection port 117 of the accommodating body 110, the semiconductor substrate provided in the accommodating body 110 is electrically connected to the control device 11 via the connecting member. As a result, the control device 11 can acquire information on the inkjet ink composition contained in the container 110.

The shape of the cover 150 is arbitrary as long as it is possible to protect the portion where the connection port 117 of the housing 110 and the connector 140 are connected. For example, the shape of the cover 150 may be a hemispherical shape or a semi-cylindrical shape.

Further, the cover 150 may be provided so as to protect only the lever 142. That is, the cover 150 may have a structure that satisfies at least one of protecting the portion to which the connection port 117 of the housing 110 and the connector 140 are connected and protecting the lever 142.

In a state where the connector 140 is connected to the connection port 117 of the housing body 110, the wall portion 121 of the support portion 120 sandwiches the grip portion 141, that is, the connection portion between the connection port 117 of the housing body 110 and the connector 140. Be placed. That is, in a state where the connector 140 is connected to the connection port 117 of the accommodating body 110, the support portion 120 has a pair of wall portions 121 arranged so as to sandwich the grip portion 141.

As shown in FIG. 4, each of the pair of wall portions 121 is provided with a convex portion 122 projecting inside the pair of wall portions 121. The protrusion 122 is in contact with the cover 150. When the user rotates the cover 150 and arranges the cover 150 at the first position covering the grip portion 141, the movement of the cover 150 is restricted so that the cover 150 does not come into contact with the connector 140. That is, the wall portion 121 has a convex portion that is accessible to the cover 150 and can be restricted from contacting the connector 140 connected to the housing 110 at the first position that covers the grip portion 141 of the connector 140. 122 is provided.
The convex portion 122 is an example of a regulating portion.

The detection unit 151 is a so-called torque switch, which is attached to the wall portion 121 of the support portion 120 to detect the position of the cover 150. In the detection unit 151, the actuator of the torque switch is pressed when the cover 150 is in the closed state, and the actuator of the torque switch is released when the cover 150 is in the open state. Then, the control device 11 detects the opening / closing of the cover 150 based on the signal supplied from the detection unit 151.

In the inkjet ink composition supply device 100 according to the present embodiment, when the amount of the inkjet ink composition accommodated in the housing 110 is reduced, the user removes the connector 140 from the housing 110 having a small amount of the inkjet ink composition, and the inkjet ink composition. The low-weight container 110 is removed from the mounting table 130. Subsequently, the user mounts the new housing 110 on the mounting table 130 and attaches the connector 140 to the new housing 110.

Next, the work of replacing the container 110 with a small amount of the inkjet ink composition with a new container 110 will be described.

When the amount of the inkjet ink composition contained in the container 110 is reduced, the user rotates the cover 150 and arranges the cover 150 in a second position that does not cover the grip portion 141, as shown in FIG. Subsequently, as shown in FIG. 5, the user moves the lever 142 to a position where the connection state between the connector 140 and the connection port 117 of the housing 110 can be released, and the connector 140 is moved from the connection port 117 of the housing 110. Remove. Subsequently, as shown in FIG. 4, the user removes the housing 110 having a small amount of the inkjet ink composition from the mounting table 130.

In the present embodiment, the cover 150 is configured to support the connector 140 removed from the housing 110 mounted on the mounting table 130 at the second position. That is, when the cover 150 is arranged at the second position that does not cover the grip portion 141 and the connector 140 is removed from the connection port 117 of the housing 110, the cover 150 has the connector 140 removed from the housing 110 in the −Z direction. Support the connector 140 so that it does not fall into.

If the connector 140 removed from the housing 110 without the cover 150 is dropped in the −Z direction, an extra force is applied to the connection portion between the connector 140 and the tube 105, and the connection between the connector 140 and the tube 105 is applied. May be released. Further, when the connection between the connector 140 and the tube 105 is disconnected, air may be supplied to the discharge head 43 of the droplet discharge device 10. When air is supplied to the ejection head 43 of the droplet ejection device 10, when the inkjet ink composition is ejected from the ejection head 43, the air is ejected from the nozzle to which the inkjet ink composition should be ejected among the plurality of nozzles. This leads to defects in the dots of the inkjet ink composition, i.e., the ink dots. Image quality may deteriorate due to defects in the ink dots.

In the present embodiment, the connector 140 removed from the housing 110 is supported by the cover 150 and does not fall in the −Z direction, and an extra force is unlikely to be applied to the connection portion between the connector 140 and the tube 105. Therefore, for example, the connector. The connection between the 140 and the tube 105 is disconnected, air is supplied to the discharge head 43 of the droplet discharge device 10, and the occurrence of a problem that the image quality is deteriorated is suppressed.

Next, the user mounts the new housing 110 on the mounting table 130, as shown in FIG. Subsequently, the user connects the connector 140 to the connection port 117 of the accommodating body 110 as shown in FIG. Subsequently, the user moves the lever 142 to a position where the connection state between the connector 140 and the connection port 117 of the accommodating body 110 is locked.

Subsequently, as shown in FIG. 7, the user rotates the cover 150 and arranges the cover 150 at the first position covering the grip portion 141. Then, at least one of the connector 140 and the portion to which the connector 140 and the connection port 117 of the housing 110 are connected is protected by the cover 150.

When the user rotates the cover 150, the convex portion 122 provided on the wall portion 121 restricts the movement of the cover 150 so that the cover 150 does not come into contact with the grip portion 141 of the connector 140. As a result, even if the user rotates the cover 150 and arranges the cover 150 at the first position that covers the grip portion 141, an extra force is applied to the portion where the connector 140 and the connection port 117 of the accommodating body 110 are connected. Does not work. Further, since the portion where the connector 140 and the connection port 117 of the housing 110 are connected is locked by the lever 142 and protected by the cover 150, the connection between the connector 140 and the connection port 117 of the housing 110 is connected. The ink jet ink composition contained in the container 110 is stably supplied to the droplet ejection device 10.

In the inkjet ink composition supply device 100 according to the present embodiment, in addition to the first accommodating body 111 accommodating six kinds of inkjet ink compositions, a second accommodating six kinds of inkjet ink compositions are contained. The container 112 is mounted, and the source of the inkjet ink composition to the droplet ejection device 10 can be switched to the first container 111 or the second container 112.

For example, when the light magenta ink is supplied to the droplet ejection device 10 from the housing 111LM which is an example of the first housing 111 and the light magenta ink of the housing 111LM becomes low, it is an example of the second housing 112. The source of the light magenta ink can be switched so that the light magenta ink is supplied from the housing 112LM.

For example, when the light magenta ink is supplied to the droplet ejection device 10 from the container 112LM, which is an example of the second container 112, and the light magenta ink of the container 112LM is low, it is an example of the first container 111. The source of the light magenta ink can be switched so that the light magenta ink is supplied from the housing 111LM.

Like the light magenta ink, the light cyan ink, the yellow ink, the magenta ink, the cyan ink, and the black ink also provide the source of the inkjet ink composition to the droplet ejection device 10 in the first container 111 or the second container 111 or the second ink. It is possible to switch to the housing 112 of.

The source of the inkjet ink composition to the droplet ejection device 10 may be switched manually by the user or may be switched automatically. Next, a case where the supply source of the inkjet ink composition to the droplet ejection device 10 is automatically switched will be described.

In the inkjet recording device 1 according to the present embodiment, when the control device 11 detects that the cover 150 of the first accommodating body 111 has moved to the second position that does not cover the grip portion 141 by the signal from the detection unit 151, it is determined. The supply of the inkjet ink composition from the housing 110 to the droplet ejection device 10 is automatically stopped. Subsequently, the control device 11 automatically switches the supply source of the inkjet ink composition to the droplet ejection device 10 from the first container 111 to the second container 112.

For example, the light magenta ink is supplied to the droplet ejection device 10 from the housing 111LM, which is an example of the first housing 111, the light magenta ink of the housing 111LM is reduced, and the user can connect the connector 140 from the housing 111LM. When the cover 150 corresponding to the connector 140 connected to the housing 111LM is moved to the second position in order to remove the control device 11, the cover 150 does not cover the grip portion 141 due to the signal from the detection unit 151. It detects that it has moved to the second position and automatically stops the supply of light magenta ink from the housing 111LM. Subsequently, the control device 11 transfers the supply source of the inkjet ink composition to the droplet ejection device 10 from the accommodating body 111LM which is an example of the first accommodating body 111 to the accommodating body 112 which is an example of the second accommodating body 112. Automatically switches to body 112LM.

Light cyan ink, yellow ink, magenta ink, cyan ink, and black ink, like light magenta ink, are also covered by the user to remove the connector 140 from the housing 110, which is an example of the first housing 111. When the 150 is moved to the second position, the control device 11 automatically stops the supply of the inkjet ink composition from the container 110, which is an example of the first container 111, and the droplet ejection device 10 is supplied with the ink composition. The source of the inkjet ink composition is automatically switched from the container 110, which is an example of the first container 111, to the container 110, which is an example of the second container 112.

Similarly, the user contains the light magenta ink, the light cyan ink, the yellow ink, the magenta ink, the cyan ink, and the black ink in order to remove the connector 140 from the housing 110 which is an example of the second housing 112. When the cover 150 corresponding to the connector 140 connected to each of the body 111LM, the housing 111LC, the housing 111Y, the housing 111M, the housing 111C, and the housing 111K is moved to the second position, the control device 11 moves. The supply of the inkjet ink composition from the container 110, which is an example of the second container 112, is automatically stopped, and the source of the inkjet ink composition to the droplet ejection device 10 is the second container 112. It automatically switches from the housing 110, which is an example, to the housing 110, which is an example of the first housing 111.

Although the preferred embodiments of the present invention have been described above, the present invention is not limited thereto.

For example, the inkjet recording apparatus of the present invention may have any structure as long as it includes an inkjet ink composition, and is not limited to the above-mentioned one.

Next, specific examples of the present invention will be described.
[5] Preparation of light-colored ink as an inkjet ink composition (Example LM1)
First, the disperse dye C.I. I. 60:15 parts by mass of disperse red, 15 parts by mass of formalin condensate of naphthalene sulfonic acid as a dispersant, and 70 parts by mass of ion-exchanged water were mixed, and then mixed and stirred to form a slurry.

Next, this slurry is transferred to a mixing tank of a bead mill, and 0.3 mm zirconia beads are added so as to be 80% by volume of the pulverization chamber volume so that the specific surface area of the disperse dye becomes 3.0 m ² / g. A disperse dye dispersion was prepared in 1.

Then, in the above-mentioned dispersion dye dispersion, Sylface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.), which is a silicone-based surfactant having a chemical structure represented by the above formula, glycerin, propylene glycol, triethylene glycol monomethyl ether, and tri Ethanolamine, Proxel XL-2 (S) (manufactured by Ronza), and ion-exchanged water were added in a predetermined ratio, and the mixture was mixed and stirred with a magnetic stirrer for 2 hours. Then, by filtering with a membrane filter having a pore size of 1 μm, light magenta ink, which is a light color ink, was prepared as an inkjet ink composition having the composition shown in Table 1.

(Examples LM2 to M6)
An inkjet ink composition was prepared in the same manner as in Example LM1 except that the blending ratio of each component was changed so that the composition was as shown in Table 1.

(Comparative Examples LM1 and M2)
An inkjet ink composition was prepared in the same manner as in Example LM1 except that the blending ratio of each component was changed so that the composition was as shown in Table 1.

(Comparative Examples LM3, M4)
BYK-348 (manufactured by Big Chemie) was used instead of Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.) as a silicone-based surfactant, and the compounding ratio of the components was changed to obtain the composition as shown in Table 1. An inkjet ink composition was prepared in the same manner as in Example LM1 except for the above.

(Example LC1)
First, the disperse dye C.I. I. Disperse blue 359: 15 parts by mass, formalin condensate of naphthalene sulfonic acid as a dispersant: 15 parts by mass, and ion-exchanged water: 70 parts by mass were mixed, and then mixed and stirred to form a slurry. ..

Next, this slurry is transferred to a mixing tank of a bead mill, and 0.3 mm zirconia beads are added so as to be 80% by volume of the pulverization chamber volume so that the specific surface area of the disperse dye becomes 3.0 m ² / g. A disperse dye dispersion was prepared in 1.

Then, in the above-mentioned dispersion dye dispersion, Sylface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.), which is a silicone-based surfactant having a chemical structure represented by the above formula, glycerin, propylene glycol, triethylene glycol monomethyl ether, and tri Ethanolamine, Proxel XL-2 (S) (manufactured by Ronza), and ion-exchanged water were added in a predetermined ratio, and the mixture was mixed and stirred with a magnetic stirrer for 2 hours. Then, by filtering with a membrane filter having a pore size of 1 μm, light cyan ink, which is a light color ink, was prepared as an inkjet ink composition having the composition shown in Table 2.

(Examples LC2 to C6)
An inkjet ink composition was prepared in the same manner as in Example LC1 except that the blending ratio of each component was changed so that the composition was as shown in Table 2.

(Comparative Examples LC1, C2)
An inkjet ink composition was prepared in the same manner as in Example LC1 except that the blending ratio of each component was changed so that the composition was as shown in Table 2.

(Comparative Examples LC3, C4)
BYK-348 (manufactured by Big Chemie) was used instead of Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.) as a silicone-based surfactant, and the compounding ratio of the components was changed to obtain the composition as shown in Table 2. An inkjet ink composition was prepared in the same manner as in Example LC1 except for the above.

The cloud points of Silface SAG503A (manufactured by Nisshin Kagaku Kogyo Co., Ltd.) and BYK-348 (manufactured by Big Chemie Co., Ltd.) used as the silicone-based surfactants in each of the above-mentioned Examples and Comparative Examples were as follows. Was measured. That is, a 10% by mass aqueous solution of propylene glycol: 99.0 parts by mass and a silicone-based surfactant: 1.0 part by mass were mixed, mixed with a magnetic stirrer for 1 hour, and stirred to prepare a mixed solution. Obtained. 30 mL of this mixed solution was sealed in a 100 mL bottle and left in a constant temperature bath at 40 ° C., 50 ° C., and 60 ° C. for 24 hours, respectively, and the temperature range in which the oil component was precipitated and the composition became cloudy was measured. As a result, it was confirmed that the cloud point of Silface SAG503A (manufactured by Nisshin Kagaku Kogyo Co., Ltd.) was more than 60 ° C without white turbidity even when measured at 60 ° C. On the other hand, for BYK-348 (manufactured by Big Chemie), cloudiness occurred in the measurements at 60 ° C and 50 ° C, and it was confirmed that the cloud point was 50 ° C or less.

The compositions of the inkjet ink compositions of each of the Examples and Comparative Examples are summarized in Tables 1 and 2. In Tables 1 and 2, the numerical values for the content of each component are shown in units of mass%, and C.I. I. Disperse thread 60 is referred to as "DR60", C.I. I. Disperse Blue 359 is "DB359", Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.) is "SAG503A", BYK-348 (manufactured by Big Chemie) is "BYK-348", glycerin is "GL", and propylene glycol is "". "PG", triethylene glycol monomethyl ether is referred to as "TGME", triethanolamine is referred to as "TEA", and Proxel XL-2 (S) (manufactured by Lonza) is referred to as "XL-2". In addition, the surface tension of each of the inkjet ink compositions of each of the above embodiments was within the range of 23 mN / m or more and 30 mN / m or less. The surface tension was measured by the Wilhelmy method at 25 ° C. using a surface tension meter (CBVP-7, manufactured by Kyowa Interface Science Co., Ltd.). Further, the viscosities of the inkjet ink compositions of each of the above examples at 25 ° C. were all in the range of 4 mPa · s or more and 6 mPa · s or less. The viscosity of the inkjet ink composition was determined by measurement according to JIS Z8809 using a vibration viscometer (VM-100, manufactured by Senicock).

[6] Preparation of dark color ink (Preparation Example DM1)
First, the disperse dye C.I. I. 60:15 parts by mass of disperse red, 15 parts by mass of formalin condensate of naphthalene sulfonic acid as a dispersant, and 70 parts by mass of ion-exchanged water were mixed, and then mixed and stirred to form a slurry.

Next, this slurry is transferred to a mixing tank of a bead mill, and 0.3 mm zirconia beads are added so as to be 80% by volume of the pulverization chamber volume so that the specific surface area of the disperse dye becomes 3.0 m ² / g. A disperse dye dispersion was prepared in 1.

Then, in the above disperse dye dispersion, the silicone-based surfactant Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.), glycerin, propylene glycol, triethylene glycol monomethyl ether, triethanolamine, Proxel XL-2 (S) ) (Manufactured by Ronza) and ion-exchanged water were added at a predetermined ratio, and the mixture was mixed and stirred with a magnetic stirrer for 2 hours. Then, magenta ink, which is a dark-colored ink having the composition shown in Table 3, was prepared by filtering with a membrane filter having a pore size of 1 μm.

(Preparation Examples DM2 to DM6)
A dark-colored ink was prepared in the same manner as in Preparation Example DM1 except that the blending ratio of each component was changed so that the composition was as shown in Table 3.

(Preparation Example DC1)
First, the disperse dye C.I. I. Disperse blue 359: 15 parts by mass, formalin condensate of naphthalene sulfonic acid as a dispersant: 15 parts by mass, and ion-exchanged water: 70 parts by mass were mixed, and then mixed and stirred to form a slurry. ..

Next, this slurry is transferred to a mixing tank of a bead mill, and 0.3 mm zirconia beads are added so as to be 80% by volume of the pulverization chamber volume so that the specific surface area of the disperse dye becomes 3.0 m ² / g. A disperse dye dispersion was prepared in 1.

Then, in the above disperse dye dispersion, the silicone-based surfactant Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.), glycerin, propylene glycol, triethylene glycol monomethyl ether, triethanolamine, Proxel XL-2 (S) ) (Manufactured by Ronza) and ion-exchanged water were added at a predetermined ratio, and the mixture was mixed and stirred with a magnetic stirrer for 2 hours. Then, cyan ink, which is a dark ink having the composition shown in Table 3, was prepared by filtering with a membrane filter having a pore size of 1 μm.

(Preparation Examples DC2 to DC5)
A dark-colored ink was prepared in the same manner as in Preparation Example DC1 except that the blending ratio of each component was changed so that the composition was as shown in Table 3.

The composition of the dark ink of each of the above preparation examples is summarized in Table 3. In Table 3, the numerical values for the content of each component are shown in units of mass%, and C.I. I. Disperse thread 60 is referred to as "DR60", C.I. I. Disperse Blue 359 is "DB359", Silface SAG503A (manufactured by Nissin Chemical Industry Co., Ltd.) is "SAG503A", BYK-348 (manufactured by Big Chemie) is "BYK-348", glycerin is "GL", and propylene glycol is "". "PG", triethylene glycol monomethyl ether is referred to as "TGME", triethanolamine is referred to as "TEA", and Proxel XL-2 (S) (manufactured by Lonza) is referred to as "XL-2". In addition, the surface tension of each of the inkjet ink compositions of each of the above embodiments was within the range of 23 mN / m or more and 30 mN / m or less. The surface tension was measured by the Wilhelmy method at 25 ° C. using a surface tension meter (CBVP-7, manufactured by Kyowa Interface Science Co., Ltd.). Further, the viscosities of the inkjet ink compositions of each of the above examples at 25 ° C. were all in the range of 4 mPa · s or more and 6 mPa · s or less. The viscosity of the inkjet ink composition was determined by measurement according to JIS Z8809 using a vibration viscometer (VM-100, manufactured by Senicock).

[7] Evaluation The following evaluations were performed using light-colored inks as the inkjet ink compositions of each of the above-mentioned Examples and Comparative Examples.

[7-1] Evaluation of Precipitation First, for the light-colored ink as the inkjet ink composition of each of the Examples and Comparative Examples, the absorbance W0 at the wavelength at the maximum value was determined immediately after production.

Then, 100 mL of each light-colored ink was placed in a predetermined glass bottle and allowed to stand in a constant temperature room at 60 ° C. for 5 days, and then allowed to stand in a room at 25 ° C. for 3 weeks. Then, 5 mL of the supernatant was collected, and the absorbance WA at the wavelength at which the maximum value was obtained was determined.

For each light-colored ink, the residual ratio S was calculated from the values of absorbance W0 and absorbance WA obtained as described above by the following formula, and the sedimentation property was evaluated according to the following criteria. It can be said that the higher the survival rate S, the better. B or higher was regarded as a good level.

Residual rate S (%) = ((absorbance WA) / (absorbance W0)) × 100

A: The survival rate S is 90% or more.
B: The residual rate S is 80% or more and less than 90%.
C: The residual rate S is less than 80%.

[7-2] Evaluation of Storage Stability First, 10 mL each of light-colored ink as an inkjet ink composition of each of the above-mentioned Examples and Comparative Examples was placed in a predetermined glass bottle, and 30 in a state where a gas-liquid interface was present. The mixture was left in an environment of ° C. to 60 ° C. for 7 cycles for a total of 168 hours. Then, each light-colored ink was filtered through a metal mesh filter having a pore size of 10 μm, the number of solids remaining on the metal mesh filter per 1 mm square was counted, and the storage stability was evaluated according to the following criteria. It can be said that the smaller the amount of solid matter remaining on the metal mesh filter, the better the storage stability. B or higher was regarded as a good level.

A: The number of solids per 1 mm square was less than 5.
B: The number of solids per 1 mm square was 5 or more and less than 30.
C: The number of solids per 1 mm square was 30 or more.

[7-3] Graininess Evaluation Using the light-colored inks as the inkjet ink compositions of Examples LM1 to LM6 and Comparative Examples LM1 to LM4, a recorded material was produced as follows, and the obtained recorded material was obtained. The graininess was evaluated.

First, the light-colored ink was housed in the container of the inkjet recording apparatus as shown in FIGS. 1 to 7.

Next, recording is performed from the ejection head of the inkjet recording device to the intermediate transfer medium TRANSJET Classic (Cham Paper) at a resolution of 720 x 720 dpi, and a gradation pattern from white to magenta DUTY 100% output is printed. did. The maximum amount of ink that can be applied is defined as Duty 100%.

After that, the ink-adhered side of the intermediate transfer medium was brought into close contact with the cloth (100% polyester, Amina, manufactured by Toray Industries, Inc.), which is a white recording medium, and in this state, a heat press machine (TP-608M, manufactured by Taiyo Seiki Co., Ltd.) was used. Then, it was heated at 200 ° C. for 60 seconds and sublimation transfer was performed to obtain a stained product as a recorded material.

Further, the recorded material is the same as above except that the light-colored inks as the inkjet ink compositions of Examples LC1 to LC6 and Comparative Examples LC1 to LC4 are used to form a gradation pattern from white to cyan DUTY 100% output. The dyed product was obtained as.

The printed surface of each of the obtained dyed products was visually observed, and the graininess was evaluated according to the following criteria. B or higher was regarded as a good level.

A: The graininess cannot be recognized by visual observation at a distance of 30 cm from the printed surface.
B: A grainy feeling can be recognized by visual observation at a distance of 30 cm from the printed surface.
C: A grainy feeling can be recognized even by visual observation at a distance exceeding 30 cm from the printed surface.

[7-4] Evaluation of Connection between Colors For the light-colored ink as the inkjet ink composition of each of the above-mentioned Examples and Comparative Examples, an inkjet ink set that is a combination with a dark-colored ink is prepared as follows. , The recorded material was manufactured, and the connection between colors was evaluated for the obtained recorded material.

First, C.I. I. Light-colored ink containing disperse thread 60 and C.I. I. C.I. I. Light-colored inks containing Disperse Blue 359 and C.I. I. An inkjet ink set consisting of two types of inkjet ink compositions, which are various combinations with dark ink containing Disperse Blue 359, was prepared.

Next, using the inkjet recording apparatus as shown in FIGS. 1 to 7, the light color ink and the dark color ink constituting the inkjet ink set are used to resolve the resolution with respect to the intermediate transfer medium TRANSJET Classic (Cham Paper). Recording was performed at 720 × 720 dpi, and a fill pattern was output with a dark color ink of 10% to 50% DUTY, and a fill pattern was output with a light color ink of 10% to 50% DUTY.

After that, the ink-adhered side of the intermediate transfer medium was brought into close contact with the cloth (100% polyester, Amina, manufactured by Toray Industries, Inc.), which is a white recording medium, and in this state, a heat press machine (TP-608M, manufactured by Taiyo Seiki Co., Ltd.) was used. Then, it was heated at 200 ° C. for 60 seconds and sublimation transfer was performed to obtain a stained product as a recorded material.

The printed surface of each of the obtained dyed products was measured using a ^{spectrophotometer} (trade name "FD-7", manufactured by Konica Minolta Co., Ltd.) under the conditions of an optical D65 light source and a viewing angle of 2 degrees. b ^* The value was calculated and the connection between colors was evaluated according to the following criteria. A was set to a good level.

A: The transition of (a ^{*, b *) of the light color ink overlaps with the transition of (a * , b * ) of} the dark color ink.
C: The transition of (a ^{*, b *) of the light color ink does not overlap with the transition of (a * , b * ) of} the dark color ink.

The results of the above [7-1] to [7-3] are summarized in Table 4, and the results of the above [7-4] are summarized in Tables 5 and 6.

As is clear from Tables 4 to 6, excellent results were obtained in the present invention. On the other hand, in the comparative example, satisfactory results were not obtained.

In addition, regarding the various inks prepared as described above, C.I. I. Light-colored inks containing disperse threads 60 and C.I. I. Dark ink containing the disperse thread 60 and C.I. I. Light-colored inks containing Disperse Blue 359 and C.I. I. For an inkjet ink set, which is a combination of four types of ink with a dark color ink including Disperse Blue 359, an image of a predetermined pattern is formed by using an inkjet recording device as shown in FIGS. 1 to 7. As a result of producing a recorded material, the inkjet ink set provided with the light-colored ink according to the present invention was able to stably produce a recorded material having a suitable image with excellent color-to-color connection, whereas the comparison was made. Satisfactory results were not obtained with the inkjet ink set according to the example.

1 ... inkjet recording device, 10 ... droplet ejection device, 11 ... control device, 12 ... pedestal, 13 ... housing, 20 ... feeding section, 21 ... holding section, 25 ... winding section, 26 ... holding section, 30 ... Support part, 31 ... 1st support part, 32 ... 2nd support part, 33 ... 3rd support part, 35 ... Base member, 40 ... Printing part, 41 ... Guide shaft, 42 ... Carriage, 43 ... Discharge head, 50 ... Conveying unit, 51 ... Conveying roller pair, 52 ... Conveying roller pair, 56 ... Drive roller, 57 ... Driven roller, 100 ... Inkjet ink composition supply device, 105 ... Tube, 106 ... Protective tube, 110 ... Container, 111 ... First Containment Body, 112 ... Second Containment Body, 111LC, 112LC ... Containment Body, 111LM, 112LM ... Containment Body, 111K, 112K ... Containment Body, 111C, 112C ... Containment Body, 111M, 112M ... Containment Body, 111Y, 112Y ... Containment body, 115 ... Exterior case 117 ... Connection port, 120 ... Support part, 121 ... Wall part, 122 ... Convex part, 130 ... Mounting stand, 131 ... Wall part, 132, 152 ... Label, 140 ... Connector, 141 ... Grip, 142 ... Lever, 150 ... Cover, 151 ... Detection, M ... Media, R ... Roll

Claims (14)

An inkjet ink composition containing a disperse dye, a silicone-based surfactant, and water.
The content of the disperse dye is 1.0% by mass or more and 3.0% by mass or less.
The silicone-based surfactant is said to be a mixed solution when a 10% by mass aqueous solution of propylene glycol: 99.0 parts by mass and the silicone-based surfactant: 1.0 part by mass are mixed to prepare a mixed solution. An inkjet ink composition having a cloud point of 60 ° C. or higher for the mixed liquid. The inkjet ink composition according to claim 1, wherein the inkjet ink composition further contains a dispersant. The inkjet ink composition according to claim 2, wherein the dispersant is at least one selected from the group consisting of a sodium salt of a naphthalene sulfonic acid formarin condensate and a sodium salt of lignin sulfonic acid. The disperse dye is C.I. I. Disperse thread 60 and C.I. I. The inkjet ink composition according to any one of claims 1 to 3, which is one or more selected from the group consisting of Disperse Blue 359. The inkjet ink composition according to any one of claims 1 to 4, wherein the content of the disperse dye is 2.0% by mass or less. The inkjet ink composition according to any one of claims 1 to 5, wherein the content of the silicone-based surfactant is 0.1% by mass or more and 3.0% by mass or less. An inkjet ink set that includes multiple types of inkjet ink compositions.
The inkjet ink set, wherein at least one of the inkjet ink compositions constituting the inkjet ink set is the inkjet ink composition according to any one of claims 1 to 6. The inkjet ink set according to claim 7, further comprising two or more types of the inkjet ink composition according to any one of claims 1 to 6. The inkjet ink set includes the inkjet ink composition according to any one of claims 1 to 6 as a light-colored ink, and the same disperse dye as the disperse dye contained in the light-colored ink is used in the light-colored ink. The inkjet ink set according to claim 7 or 8, which comprises a dark color ink containing a higher content than the ink. An ink containing cyan ink is provided as the dark color ink, and the ink is provided.
The inkjet ink set according to claim 9, wherein the content of the disperse dye in the cyan ink is 3.5% by mass or more and 6.0% by mass or less. The content of the disperse dye contained in the cyan ink is XDC [mass%], and the content of the disperse dye contained in the light color ink containing the same disperse dye as the cyan ink is XLC [mass%]. The inkjet ink set according to claim 10, wherein the ink jet ink set satisfies the relationship of 0.18 ≦ XLC / XDC ≦ 0.70. An ink containing magenta ink is provided as the dark color ink, and the ink is provided.
The inkjet ink set according to any one of claims 9 to 11, wherein the content of the disperse dye in the magenta ink is 5.0% by mass or more and 8.0% by mass or less. The content of the disperse dye contained in the magenta ink is XDM [mass%], and the content of the disperse dye contained in the light color ink containing the same disperse dye as the magenta ink is XLM [mass%]. The inkjet ink set according to claim 12, wherein the ink jet ink set satisfies the relationship of 0.18 ≤ XLM / XDM ≤ 0.70. An inkjet recording apparatus comprising the inkjet ink composition according to any one of claims 1 to 6.

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